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richlowe32
29-01-2006, 22:02
Hi,

For a couple of weeks now I've been intermittantly suffering periods of up to 20-30 seconds where the internet seems to "go away" on my 2Mb cable connection.

I mostly use my connection for online gaming so this has a big impact on my use of the internet.

I called NTL broadband support last week, to be told my modem is operating fine, as the Rdy and sync LEDs stay on solid while this is happening. It's something my end.

I've been running traceroute software to try and figure out where the problem lies, and what I see is big ping spikes associated with a private range IP, 10.66.96.1. which is the first hop from my router. The response from this IP has been as high as 4000ms as well as not responding. The interesting thing is I am also running teamspeak, and I can hear people talking and asking me if my connections alright for 5-10 seconds after things start to go awol in the game, though they cannot hear me. So I figure this is something to do with my upstream connection.

I checked the error log on the modem , the last entry 20:37 coincides with when the drops of service were happening. Does this look like a fault with the modem or with the connection upstream?

I'd like a second opinion before I phone to get someone out to have a look at it.

First Time Last Time Counts Level ID Text
Sun Jan 29 20:37:14 2006 Sun Jan 29 20:37:14 2006 7 Critical(3) 82000500 Started Unicast Maintenance Ranging - No Response received - ...
Sat Jan 28 17:05:53 2006 Sat Jan 28 17:05:53 2006 1 Warning(5) 68010300 DHCP RENEW WARNING - Field invalid in response
Sat Jan 28 09:42:12 2006 Sat Jan 28 09:42:12 2006 19 Critical(3) 82000500 Started Unicast Maintenance Ranging - No Response received - ...
Time Not Established Time Not Established 1 Error(4) 68000403 ToD request sent- No Response received
Time Not Established Time Not Established 1 Critical(3) 68000300 DHCP WARNING - Non-critical field invalid in response.
Time Not Established Time Not Established 3 Critical(3) 68000100 DHCP FAILED - Discover sent, no offer received
Time Not Established Time Not Established 2 Critical(3) 68000300 DHCP WARNING - Non-critical field invalid in response.
Wed Jan 18 01:05:24 2006 Wed Jan 18 01:05:24 2006 1 Critical(3) 82000200 No Ranging Response received - T3 time-out
Wed Jan 18 00:38:37 2006 Wed Jan 18 00:38:37 2006 1 Critical(3) 82000400 Received Response to Broadcast Maintenance Request, But no Un...
Tue Jan 17 23:23:03 2006 Tue Jan 17 23:23:03 2006 14 Critical(3) 82000500 Started Unicast Maintenance Ranging - No Response received - ...


... Older entries deleted ...

Hom3r
29-01-2006, 22:07
It could be just a random fault.

How are you connected to the modem?

richlowe32
29-01-2006, 22:15
I have the modem connected by ethernet to a PC I run a software firewall and router package on.

I've just had to type this in again because my connection went!

Just did a tracert, and the first few hops hop look like this :

1 <1 ms <1 ms <1 ms 192.168.0.1
2 303 ms 53 ms 76 ms 10.66.96.1
3 12 ms 13 ms 39 ms cosh-t2cam1-b-ge93.inet.ntl.com [80.3.162.133]
4 114 ms 294 ms 12 ms cosh-t2core-b-ge-wan61.inet.ntl.com [80.3.161.13
]


300ms + on that first hop doesn't look normal to me. SO even though I have connectivity at the moment, latency is still an issue.

nerionx
29-01-2006, 22:19
this sounds exactly like my problem

Hom3r
29-01-2006, 22:24
Are you using a proxy?

if so try a different one.

If you are not using one try using one.
http://homepage.ntlworld.com/robin.d.h.walker/cmtips/trancache.html#ntl

nerionx
29-01-2006, 22:28
Are you using a proxy?

if so try a different one.

If you are not using one try using one.
http://homepage.ntlworld.com/robin.d.h.walker/cmtips/trancache.html#ntl

Works same as usual, my internet goes down it also cannot connect to the proxies I select

richlowe32
29-01-2006, 22:34
As the issue takes my connection out completely (not just surfing problems) not sure how this will help.

The proxy server certainly doesn't figure in any of the tracert I've run.

mike24
30-01-2006, 01:17
your problem might be the router have you tried 'winipcfg' , in the run option?

elstcb
30-01-2006, 05:34
Just to let the OP know that he's not alone in having these dropout problems, I've been having the same for quite a while now and am also on 2mb. Have got an engineer coming out tomorrow.

sparbag
30-01-2006, 14:56
Hello,
I am also on the 2 Mbit connection and the first techy said no faults two weeks later second teechy (female this time) noted the fault was with my Terayon MODEM and it was replaced two days later.
The symptoms were the Internet connection cutting out completely for 20 to 30 seconds then kicking back in again. Causing havoc for the VPN into work.

As for the 10.xx.xx.xx IP address I believe that is Skypes IP proxy address.

Steve

jtwn
30-01-2006, 15:20
:)

Its your uBR's address, 10. addresses are private addresses. Consistent high pings at your ubr could signal congestion at the router.

d0h
30-01-2006, 17:10
Exactly the same problem here in Leicestershire area on 2mb. Online gaming is impossible....

richlowe32
30-01-2006, 18:39
Thanks for the responses!

I used my connection in the early afternoon (RE not prime time), and things were alot better. From this limited test, it's probably congestion.

I guess I'll just ring up and complain. If it doesn't get any better time to consider ADSL.

Ignition
30-01-2006, 18:52
Upstream congestion on the uBR. Madly inconsistent pings but no evidence of packet loss.

Please guys much as though offering advice is good make sure that it's accurate advice first.

As for the 10.xx.xx.xx IP address I believe that is Skypes IP proxy address.

Skype has no IP proxy address whatever that is it's just packets over your connection same as pretty much everything else.

Are you using a proxy?

if so try a different one.

If you are not using one try using one.
http://homepage.ntlworld.com/robin.d...cache.html#ntl

Proxies don't cause bad pings or issues with Teamspeak or other VoIP. They only affect traffic on port 80.

jtwn
30-01-2006, 22:47
Upstream congestion on the uBR. Madly inconsistent pings but no evidence of packet loss.

Please guys much as though offering advice is good make sure that it's accurate advice first.



Mmmmmmmmmmmmmmmmmeh.

elstcb
31-01-2006, 02:58
The engineer has been and gone, he replaced my old 120 modem with a 250 (I think the OP is already on a 250?) and reduced the downstream power slightly. Seems to have solved some of my problems, couldn't get P2P to crash it at all. Still getting dropouts during multiplayer games though - an afternoon playing COD2 was as painful as ever.

Unfortunately didn't think to record the time of dropouts and rebooted the modem several times which could cloud the error logs information somewhat, that being said it looks very similar to the OP's...

First Time, Last Time, Counts, Level, ID, Text
Mon Jan 30 21:02:43 2006, Mon Jan 30 21:02:43 2006 , 1, Critical(3), 82000500, Started Unicast Maintenance Ranging - No Response received - ...
Time Not Established, Time Not Established, 6, Critical(3), 68000300, DHCP WARNING - Non-critical field invalid in response.
Time Not Established, Time Not Established, 1, Critical(3), 82000200, No Ranging Response received - T3 time-out
Time Not Established, Time Not Established, 1, Critical(3), 82000700, Unicast Ranging Received Abort Response - Re- initializing MAC
Time Not Established, Time Not Established, 8, Critical(3), 82000200, No Ranging Response received - T3 time-out
Time Not Established, Time Not Established, 1, Critical(3), 84000100, SYNC Timing Synchronization failure - Failed to acquire QAM/Q...


Next time I'm playing I'l clear the logs prior to starting and record the dropout times (and take a copy of the error log every time). That should at least give us some ammunition to fire at TS.

richlowe32
31-01-2006, 10:22
Yes, I do have a 250. New to me as of November.

richlowe32
31-01-2006, 13:21
Well, I'm in one of the postcodes in the Portsmouth area that the NTL status page says has a fault affecting service.

Hopefully it's the cause of my troubles and will be fixed soon.

elstcb
04-02-2006, 00:31
Just to report back, the new modem has been much better behaved although I am still getting some ping issues on games, just not very often and not for very long. The modem error page isn't showing any errors related to the timing of these slowdowns (they're not even complete dropouts anymore) and it's more than possible that the ping issues are network congestion, a problem the other end or something computer related rather than a network issue. If anything changes I'll be back, in the mean time I hope the OP manages to get his problems sorted and sorry I can't be of more use.